Chimney wall mounted incinerator



Se t. 15, 1953 G. H. WlLLETT, JR. ETAL 2,552,010

can/may WALL MOUNTED INCINERATOR Filed June 7, 1951 1N VEN TOR. ea ge H1 61. 1:- 5? 7'7? M dam l romdrr Patented Sept. 15, 1953 CHIMNEY WALLMOUNTED INCINERATOR George H. Willett, J12, Birmingham, and William R.Vroman, Detroit, Mich., assignors to Incinorator Products Company,Detroit, Mich., a

corporation of Michigan Application June 7, 1951, Serial No. 230,288

Claims. 1

This invention relates broadly to new and useful improvements inincinerators and more particularly to small, domestic incinerators ofthe type adapted for mounting, as an auxiliary unit, directly on achimney.

Although the incinerator embodying the present invention can beinstalled when the dwelling or other building in which it is used inbeing constructed, it is adapted primarily and pre-eminently suited forinstallation in a completed building. The arrangement is such that theincinerator can be readily installed as an auxiliary unit and attacheddirectly to the chimney wall. Novel means are provided for supportingthe weight of the incinerator on the chimney wall and for fastening theincinerator securely to the wall. Also, the construction is unique toprevent smoke, noxious gases, and products of combustion from seepingout around the connection to the chimney.

From the foregoing it Will be apparent that an important object of thepresent invention is to provide a small domestic-type incinerator thatcan be easily and quickly installed on a chimney and that can besecurely attached to the chimney wall.

Another object of the invention is to provide an incinerator of theabove-mentioned character that is sturdily constructed for efficientoperation and that is relatively inexpensive to manufacture.

Still another object of the invention is to provide an incinerator ofthe above-mentioned character having a spark-arrester screen that isuniquely assembled in the incinerator housing to serve additionalfunctions of retaining heat-insulating lining in the housing and ofproviding a by-pass at the back of the housing through which gases andthe like pass to the chimney flue in the event that normal passageupwardly through the grate is blocked by material being burned orotherwise.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the drawing forming a part of this specification and wherein likenumerals are employed to designate like parts throughout the same,

Fig. 1 is a perspective view showing an incinerator embodying thepresent invention mounted on a chimney,

Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig. 1,

Fig. 3 is a transverse sectional view taken on the line 33 of Fig. 1,

Fig. 4 is a fragmentary view looking in the direction of the arrows 4-4of Fig. 2, and

Fig. 5 is a fragmentary vertical sectional view taken on the line 55 ofFig. 4.

In the drawing, wherein for the purpose of i1- lustration is shown apreferred embodiment of the invention, the numeral l0 designates agenerally boxlike, vertically elongated housing which preferably isbuilt of sheet metal and the interior of which is lined with asbestos orother heat-insulating material. A horizontal grate I2 is mounted in thelower portion of the housing ID for supporting refuse to be burned, andthe refuse is inserted into the housing through a door [4 in the topthereof. The particular incinerator shown is equipped with a gas burnerl6 which is disposed in the housing [0 below the grate l2, and gas issupplied to the burner from any suitable source through a pipe [8 whichenters the housing through one side thereof. The grate I2 is movableback and forth by a shaker 20. Ashes 24 and the two sides 26 and 28 canbe formed in 4 one piece. An inturned flange 30 and inturned flanges 32and 34 at the lower edges of the back 24 and sides 26 and 28respectively support the bottom 36 which preferably is spot-welded orotherwise attached thereto. The front 38 has rearwardly turned flanges40 at opposite sides thereof which overlie the two sides 26 and 28 andare securely fastened in any suitable manner as, for example, by screws42.

As perhaps best shown in Figs. 1 and 2, the lower edge of the frontpanel 38 is spaced sufficiently above the bottom 36 to provide a frontopening 43 at the bottom of the housing to accommodate the pan 22. Theopening 43 preferably extends the full width of the housing, and the pan22 is inserted into the housing through this opening. Preferably the pan22 covers the entire bottom of the housing, and the front of the panextends flush with the front of the housing. A handle 44 on the front ofthe pan permits easy insertion or removal thereof.

Inturned flanges 46 are provided at the upper edges of the back 24,sides 26 and 28, and front 30, and the cover I4 is longitudinallysupported on and fastened securely to these flanges. In the form of theinvention here shown, the cover I4 is fastened to the flanges by screws48. The cover I is equipped with the usual hinged door 50 equipped withthe usual handle 52 and having a draft opening 53 controlled by arotatable member 54. In order to facilitate insertion of refuse into thehousing and to facilitate opening and closing of the door 50, the top I4preferably is mounted to slope downwardly and forwardly as shown in thedrawing.

In order to mount the housing It! on a chimney wall here shown at 56, ametal collar 58 is inserted through an opening in the back wall 24 andwelded or otherwise fixedly attached thereto. This collar 58 is adaptedto extend through an opening in the chimney 56 and to providecommunication between the interior of the incinerator and the chimneyflue 60. In practice, an opening of suitable size and shape is cutthrough the chimney 55, and a metal sleeve 62 is set into the openingthus provided. If necessary or desirable, space between the sleeve andthe opening can be filled with cement or the like. The collar 58 fitssnugly into the sleeve 62 to prevent smoke and products of combustionfrom passing back into the room between the collar and the sleeve. Also,the collar 58 supports the full Weight of the incinerator and assists inholding the housing attached securely to the chimney. Manifestly, a snugfit between the collar 58 and the sleeve 62 forms a frictionalconnection between the housing and the chimney.

In addition, means is provided for fastening the housing to the wall.The fastening means, however, are not intended to support the weight ofthe incinerator but merely to hold it against the chimney 56.Specifically, two upstanding lugs 64 and a depending lug 66 are weldedor otherwise attached to the back 24, and expansion bolts 6'! extendingthrough the lugs into holes 68 cut partially through the wall of thechimney 56 with a star drill or the like holding the housing attached tothe Wall. It will be readily apparent in this connection that theexpansion bolts 6! are not intended to support the weight of thehousing. Their sole function is to hold the incinerator attached to thewall so as to prevent the collar 58 from pulling out of the sleeve 62.

Heretofore various means have been devised for fastening an incineratorof this type to a chimney wall without necessity of supporting it frombelow. It is not desirable, particularly in a domestic installation, toprovide a supporting structure for the incinerator which rests on thefloor below the same. Support means of this type occupies valuable spaceand increases the cost of the incinerator. Large-size expansion boltshave been used, but in general these alone are not adequately secure.Toggle bolts which anchor in the chimney flue 60 require relatively longholes to be formed through the chimney wall and this provides passagesthrough which smoke and noxious gases can work back into the basement orutility room containing the incinerator. The particular mounting hereshown overcomes all the objections described above for conventional-typemountings. It is simple, efficient, and conservative of materials. Itaccomplishes its intended purpose efficiently without materiallyaffecting or increasing the cost of the incinerator unit.

As suggested, the sides of the incinerator housing are lined with sheetsof asbestos and '12 and the back 24 and front 38 are similarly linedwith additional sheets of asbestos or the like, 14 and 15. As perhapsbest shown in Fig. 3, the front and rear asbestos linings 14 and 15 abutagainst the side linings T0 and 12 to hold the latter flatly against thesides of the housing [0. The front lining I6 is fastened to the frontwall 33 of the housing H] by screws 18. The rear lining 14 is fastenedto the back of the housing by a novel means which is considered to be afeature of this invention.

Specifically, a spark-arranger screen preferably in the form of aperforate metal plate is provided in the housing if! at the backthereof, and the screen 80, is formed at the upper and. lower 1 edgesthereof with rearwardly turned flanges 82 and 84. The asbestos lining 14is provided with an opening 86 in register with the collar 58, and theupper flange 82 bears against the asbestos lining 14 above the opening.As perhaps best shown in Fig. 2, the screen 80 extends downwardly to apoint below the grate l2, and the lower flange 84 bears against thelower portion of the lining 74. Screws 88 at opposite sides of theopening 86 and in such other locations as are required to hold thescreen 8!] attached securely to the housing hold the flanges 82 and 84pressed securely against the asbestos lining 14. It will be observed,however, that the main body of the screen 8% is spaced inwardly from theasbestos lining. By reason of this construction the screen it servesadouble function in the combinationof holding the rear lining 14 againstthe back wall of the housing l0 and also of providing a gas by-passthrough which smoke and gases trapped in the housing below the grate l2may discharge to the flue 65. In this latter connection it sometimeshappens that soggy or wet material such as garbage or the like in theincinerator prevents the smoke and gases from passing upwardly throughthe grate H! in the normal manner and some means must be provided forby-passing the refuse in order to prevent noxious and harmful gases frompassing into the room in which the incinerator is placed. The instantconstruction achieves this in a novel and highly efficient manner and atthe same time utilizes the by-pass screen both as a spark arrester andas a fastening device for the rear heat-insulating lining 14.

As best shown in Figs. 2 and 3, the grate I2 is supported by brackets 90and 92 at opposite sides of the housing I0 and the brackets aresufficiently wide to permit the grate to slide back and forth thereon.The grate I2 preferably fills substantially the entire space between thefront asbestos layer 16 and the screen 80, and it is moved back andforth to shake down ashes and the like thereon by means of the handle20.

The gas burner [6 can be supported within the housing in any suitablemanner. In the form of the invention shown, it is supported by the gasinlet pipe l8 and the latter is suitably reinforced by a bracket 94 onthe side wall 28. A louver 96 is provided in the front wall of thehousing below the burner [6 to provide air necessary to supportcombustion.

From the foregoing it will be readily apparent that the instantconstruction achieves the objects of the invention. A smalldomestic-type incinerator is provided that is simple and inexpensive yetsturdy in construction. It can be easily and quickly installed, andnovel means are provided for holding the incinerator attached securelyto the chimney wall. Parts of the incinerator are uniquely correlated toperform a number of functions in the interest of economy and this isdone without sacrificing either strength or efficiency in operation.

Having thus described the invention, we claim:

1. A wall-type incinerator comprising a sheetmetal housing, a horizontalgrate in the lower portion of the housing adapted to support refuse tobe burned, a metal collar fixed to the rear wall and extendingexteriorly of the housing above the grate and opening into the housing,said collar adapted to fit snugly into a vent hole in a chimney andforming a primary means for supporting the weight of the incinerator andalso adapted to conduct gases and products of combustion from theincinerator housing into the chimney fiue, at least one lug on andextending outwardly from the housing having an opening therein throughwhich a bolt is insertible to fasten the housing to the wall of thechimney, layers of heat-insulating material on the inner walls of saidhousing, and a perforate metal screen in the housing parallel with andfastened to the rear wall thereof, said screen having rearwardly turnedflanges bearing against the heat-insulating layer at the back of thehousing and holding the main body of the screen spaced therefrom, saidscreen extending from below the grate to a point above the vent openingdefined by said collar and serving both as a retaining member for theheat-insulating layer on the back of the housing and as a gas by-pass atthe back of the housing.

2. A wall-type incinerator comprising a housing, a grate in the housingfor supporting refuse to be burned therein, a collar on the outside ofthe housing fixedto the rear wall thereof and communicating interiorlyof the housing for con ducting gases and products of combustiontherefrom, said collar adapted to fit snugly into a vent or in a chimneyso as to discharge vented r and the like into the chimney flue and alsoadapted, by reason of its engagement with the wall of the flue opening,to support the weight of the incinerator, auxiliary means on the housingproviding an opening through which a bolt is insertible to fasten thehousing to the wall of the chimney, heat-insulating material lining theinner walls of the housing, a perforate metal screen in the housingparallel to the rear wall thereof and extending from below the grate toat least the vent opening defined by said collar, spacer means betweenthe screen and the insulating layer on the rear wall of the housingholding the screen spaced from said insulating layer, and meansfastening the screen to the housing, said screen, spacer means andfastening means jointly co-operating to hold the mentionedheat-insulating layer attached to the housing and also defining a gasby-pass at the back of the housing extending from a point below thegrate to said vent opening.

3. A wall-type incinerator comprising a sheetmetal housing having a ventopening in the rear wall thereof, a grate in the lower portion of thehousing adapted to support refuse to be burned, means for fastening thehousing to the wall of a chimney, layers of heat-insulating material onthe inner walls of the housing, and a perforate metal screen in thehousing parallel with and fastened to the rear wall thereof, said screenhaving rearwardly turned flanges bearing against the heat-insulatinglayer at the back of the housing and holding the main body of the screenspaced therefrom, said screen extending from below the grate to a pointabove the vent opening and serving both as a retaining member for theheat-insulating layer on the back of the housing and as a gas by-passthrough which fumes accumulating in the housing below the grate pass tothe vent.

4. A wall-type incinerator comprising a housing having a vent opening inthe rear wall there of, a grate in the housing below said vent opening,heat-insulating layers on the inner walls of the housing and includingsaid rear wall, a rigid screen member in the housing parallel to therear wall thereof, spacer means between the screen and the insulatinglayer on said rear wall holding the screen spaced from said insulatinglayer, and means fastening the screen to the rear wall of the housingwith the spacer means pressed against said heat-insulating layer andholding the insulating layer against the rear wall of the housing, saidscreen extending from below the grate to a point above the vent openingand defining a gas by-pass through which fumes confined in the lowerportion of the housing pass to said vent opening.

5. In combination with a chimney wall, said chimney wall having a venthole therein, a wall type incinerator comprising a sheet metal housinghaving a vent opening in the rear wall there'- of, a metal collar on theoutside of the housing fixed to the rear wall thereof around saidopening, a sleeve fitted into said vent hole in id chimney wall, saidcollar fitted into said sleeve and, by reason of its engageemnttherewith supporting the weight of the incinerator also serving toconduct gases and products of combustion from the incinerator housinginto the chimney fiue, at least one lug on and extending outwardly fromthe housing and having an opening therein, and a bolt extending throughthe lug opening and partially through said chimney wall to fasten saidhousing to said chimney wall.

GEORGE H. WILLETT, JR. WILLIAM R. VROMAN.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 774,871 Force Nov. 15, 1904 949,986 Lowe Feb. 22, 19101,131,188 Weaver Mar. 9, 1915 1,886,760 Tierney Nov. 8, 1932 1,943,132Maul Jan. 9, 1934 2,010,460 McKinley Au 6, 1935

